How do I fix a bad block on an NTFS hard drive?

Written by darren johannsen
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How do I fix a bad block on an NTFS hard drive?
ChkDsk is a utility included with Windows that is used to scan hard drives for damage. (hard drive image by iMAGINE from

Bad sectors on a hard drive are areas that have been damaged and become unusable. It's important to detect these bad sectors when they appear to prevent your computer from writing data to them. New Technology File System (NTFS) is a file system used by NT-based versions of Windows, such as Windows XP, Windows Vista and Windows 7. These versions of Windows have a built-in utility that scans for and repairs bad sectors on the hard drive called ChkDsk.

Skill level:


  1. 1

    Press the "Start" button and select "My Computer."

  2. 2

    Right-click the icon of the drive you want to scan. Select "Properties."

  3. 3

    Select the "Tools" tab and click "Check Now."

  4. 4

    Select both check boxes and click "Start."

    If the drive is currently in use, you will be presented with a message asking if you wish to schedule a scan for the next time the computer restarts. If you are presented with this message, click "Yes." Restart the computer.

  5. 5

    Wait for the scan to complete; it may take a few hours depending on the size of the hard drive. ChkDsk will repair any bad sectors it detects as it detects them.

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